To Develop a stateless web services there is a Software architecture pattern called as REPRESENTATIONAL STATE TRANSFER(REST).This pattern can used in any Distributed Framework, as this is a simple protocol for data transmission and doesn’t require any other additional data transfer rule.REST can be used with the only HTTP protocol.Each service is viewed as resouce… Continue Reading »

Since STRUTS Framework has been released officially, every java developer thinks STRUTS is the simple framework to implement. Since last two years many new framework coming to market to compete STRUTS, so the popularity of struts framework becoming obsolete. Lack of updation of Struts Framework and due to new trends coming in Web development such… Continue Reading »

Introduction: This is an introductory tutorial to the Ant build tool, a free tool under GNU License and is available at http://jakarta.apache.org/ant/. Ant allows the developer to automate the repeated process involved in the development of J2EE application. Developers can easily write the script to automate the build process like compilation, archiving and deployment. It… Continue Reading »

Java technology is both a high-level, object-oriented programming language and a software platform. Java technology is based on the concept of a Java Virtual Machine (JVM) — a translator between the language and the underlying software and hardware. All implementations of the platform emulate the JVM, enabling Java programs to run on any system with… Continue Reading »

After working on web services using JAX-RPC, I shifted my attention to another web service standard for Java – JAX-WS (Java API for XML based web services). It is a successor to JAX-RPC 1.1, and obviously, it enjoys some advantages over its predecessor. The major differences between the two standards are: JAX-WS supports SOAP 1.2,… Continue Reading »

A question often asked is ‘What’s the value is of leveraging existing business applications for reuse in Service Oriented Architectures (SOA), when surely it’s easier to start with a clean sheet?’ Existing business applications are among the most valuable assets a company owns because they support business critical processes and information which impacts every aspect… Continue Reading »

1) Introduction In this technical article, let us see how it is possible to access Web Services from JSF Applications. JSF Application resides in the Web Tier of a typical Enterprise Application, whereas Web Services are External Services that reside in the Application Tier. We make use of Java EE 5 for developing the Sample… Continue Reading »

IntroducionJava Server Faces (JSF) simplifies the development of User Interfaces in a typical Web application. It provides a Component-based Pluggable Architecture for developing and representing User Interface Components. Also bundled with JSF is a whole set of various new features like Event Handling Mechanism, Page Navigation, Input Validation and Conversion. This article provides an overview… Continue Reading »

The NetBeans Community Docs wish list is headed by a document request titled “Simple visual Web application (incl. documentation) using simple form based authentication with JAAS against a DB (e.g. login, logout, sessionhandling”. In this post, I shall give point you to some references and related resources regarding JAAS. Java SE Security Java SE security… Continue Reading »

A service-oriented architecture is essentially a collection of services. These services communicate with each other. The communication can involve either simple data passing or it could involve two or more services coordinating some activity. Some means of connecting services to each other is needed. Service-oriented architectures are not a new thing. The first service-oriented architecture… Continue Reading »

Web applications oftain contain both public and private resources. It is necessary to ensure that those key areas that are restricted to the public remain off limits to even the craftiest of users. This is a common problem and there are many different solutions. In this article, I will show how a Servlet Filter can… Continue Reading »

This article describes what’s new in version 2.2 of the API, explains the decision-making process behind the changes, and demonstrates how to write servlets using API 2.2 features. To keep the article somewhere near a reasonable length, I’m going to assume that you’re familiar with the classes and methods of previous versions of the Java… Continue Reading »

Since the introduction of the JavaBeans component architecture in the Java Development Kit v 1.1 (JDK) release in February 1997, additional specifications have been added to this component architecture such as the Extensible Runtime Containment and Services Protocol and the InfoBus standard extension. Both of these additions provide APIs that enable Beans to interconnect during… Continue Reading »

Implementing security for Web applications is a mandatory task for architects and Web application developers. In J2EE, the Web containers have support for built-in security mechanisms for their applications. There are two major components of Web application security: authentication and authorization. J2EE-based Web containers offer three types of authentication mechanisms: basic, form-based, and mutual authentication…. Continue Reading »

The AS/400 Toolbox for Java is a library of Java classes built for accessing AS/400 data and resources. It isn’t a standalone application, rather a set of APIs that give your Java program access to AS/400 data. The Toolbox is 100% Pure Java, so it runs on any workstation with a 1.1 or later Java… Continue Reading »